text: /****************************************************************************
   * libs/libc/string/lib_psfa_destroy.c
   *
   *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
   *   Author: Gregory Nutt <gnutt@nuttx.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   * 3. Neither the name NuttX nor the names of its contributors may be
   *    used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <stdlib.h>
  #include <spawn.h>
  #include <assert.h>
  
  #include <nuttx/spawn.h>
  
  #include "libc.h"
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: posix_spawn_file_actions_destroy
   *
   * Description:
   *   The posix_spawn_file_actions_destroy() function destroys the object
   *   referenced by file_actions which was previously initializeed by
   *   posix_spawn_file_actions_init(), returning any resources obtained at the
   *   time of initialization to the system for subsequent reuse.  A
   *   posix_spawn_file_actions_t may be reinitialized after having been
   *   destroyed, but must not be reused after destruction, unless it has been
   *   reinitialized.
   *
   * Input Parameters:
   *   file_actions - The posix_spawn_file_actions_t to be destroyed.
   *
   * Returned Value:
   *   On success, these functions return 0; on failure they return an error
   *   number from <errno.h>.
   *
   ****************************************************************************/
  
  int posix_spawn_file_actions_destroy(FAR posix_spawn_file_actions_t *file_actions)
  {
    FAR struct spawn_general_file_action_s *curr;
    FAR struct spawn_general_file_action_s *next;
  
    DEBUGASSERT(file_actions);
  
    /* Destroy each file action, one at a time */
  
    for (curr = (FAR struct spawn_general_file_action_s *)*file_actions;
         curr;
         curr = next)
      {
        /* Get the pointer to the next element before destroying the current one */
  
        next = curr->flink;
        lib_free(curr);
      }
  
    /* Mark the list empty */
  
    *file_actions = NULL;
    return OK;
  }
  